Why my 2005 Jeep Grande Cherokee stalls while driving only in the summer?

I bought a 2005 Jeep Grand Cherokee and it was running good the check engine light was on I had it checked and it was saying I needed the core packs changed I did that along with the spark plugs. The jeep shuts off while I'm driving only when the temperature outside is high in the winter it's fine no problem the gauges doesn't show that it's overheating though.My air stopped working but someone put a wire to the compressor and it blew cold I'm not sure what's that about but I told them not to leave it on there so it would mess anything else up. Any suggestions?

1 Answer

You may have to clean your idle air control (IAC) valve and possibly the throttle position sensor (TPS). It is possible that either the IAC is dirty and gets locked in the idle position, or the TPS is dirty and does not send the exact throttle position information to the computer.

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